Entire mailbox contents duplicated via POP3 07/01/2011
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Re: Entire mailbox contents duplicated via POP3 07/01/2011
07-01-2011 7:46 PM
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The relevant RFC (RFC1939) notes explicitly that the design of this protocol leaves users (and the designers of clients) at liberty to use the server as a repository for messages in the way that PaulBG and myself (and, no doubt, thousands if not millions of others users of POP3 services worldwide). The proposed remedies for this (if it is seen as problematic) are policies for retention enforced by the server owner.
In the case of PN, it does not appear that any such policies are made explicit, less still enforced and they appear to recognise that users will store messages in this way.
Accordingly, it is not unreasonable to expect (as an end user) that one will not be put to trouble by a problem such as that PaulBG and myself have experienced. In his case, it is significantly troublesome I expect (I certainly wouldn't want my 'phone to suddenly receive ~800 duplicate messages).
To say "you shouldn't be using it like that" is rather like going back to the shop with a pair of shoes that leak, only to have the proprietor say "You've been walking around in these haven't you?" ...
As things stand, I'm happy that Bob Pullen (as so often) has stepped in and straightforwardly said "It's a fault at our end, and we'll try and find out what's wrong and fix it".
Re: Entire mailbox contents duplicated via POP3 07/01/2011
07-01-2011 8:20 PM
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I had a glitch with one of my IMAP mailboxes during the problem. Closed and reopened Thunderbird and it sorted itself out - I'm pretty sure that if I had been using IMAP in Outlook it would have been the same.
Try an experiment: load up a mailbox with a lot of emails, then kill Outlook or the connection when it is half way through downloading. When you restart Outlook and try again all the messages it had downloaded the first time will be duplicated. Repeat that experiment using IMAP and you won't see any duplicates.
POP3 is the far simpler protocol, and with that simplicity there are consequences: duplicate emails following problems is the most significant. Choosing how long you leave messages on the sever when using POP3 is a balance between how long you'd like them backed up and how many you might get duplicated if a problem occurs.
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Entire mailbox contents duplicated via POP3 07/01/2011
07-01-2011 8:22 PM
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Quote from: Simon Presumably the provider of the IMAP server puts a limit on the amount of space allocated to each account. Your total mail store is thus constrained by this limit.
1GB in Plusnet's case - this cropped up recently when someone went over and had his emails deleted while he was away and unaware of the warnings.
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Entire mailbox contents duplicated via POP3 07/01/2011
07-01-2011 8:30 PM
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Re: Entire mailbox contents duplicated via POP3 07/01/2011
07-01-2011 10:12 PM
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In fact for the fail half way through issue you don't have to be using the option to leave the mail on the server (not positive that applies to all clients as they could update and delete after each email, but they don't tend to do that as it is less efficient than getting a list of all the emails, get them all, delete them all).
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Entire mailbox contents duplicated via POP3 07/01/2011
08-01-2011 9:28 PM
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Although there is a suggestion above that POP3 can be flakey with lost connections etc., in three years with the same configuration using Outlook and PlusNet, this has only happened twice as I've reported on here.
Cheers
Paul
Re: Entire mailbox contents duplicated via POP3 07/01/2011
08-01-2011 9:35 PM
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jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Entire mailbox contents duplicated via POP3 07/01/2011
09-01-2011 9:42 PM
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In case anyone is interested, I'm using Apple Mail.
I'd best check my Mobile email account. Don't want them all going to my 'phone via 3g... I can't afford the data charges!
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 8:14 AM
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I've just found that my entire pop3 mailbox has been downloaded for the third or fourth time in the last few days. Fortunately I don't use PlusNet as my main email provider so the mailbox only contained about 60 emails from PlusNet, but it's still a pain & I'd like to know why it's happening.
By the way I'm also using Apple Mail.
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 8:15 AM
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I was just reading emails on my phone, went to make a cuppa, then all the emails had gone. Everything has been wiped and nothing is being picked up. I checked Squirrel mail - and again I see nothing - just " ERROR: Connection dropped by IMAP server." Interestingly though both Outlook and Gmail are still picking up new emails since the phone lost everything and stopped working.
Help please!
Paul
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 9:09 AM
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Quote from: paulh As things stand, I'm happy that Bob Pullen (as so often) has stepped in and straightforwardly said "It's a fault at our end, and we'll try and find out what's wrong and fix it".
If I'm honest, we're struggling a little to work out what caused certain customer's POP3 mail to be downloaded again
We checked the UDILs in the cache file and the base numbers hadn't changed. As I mentioned last week, this particular aspect of the problem seems to have been limited to one particular storage filer. I just hope it doesn't happen again following this morning's issues.
Quote from: jelv
Quote from: Simon Presumably the provider of the IMAP server puts a limit on the amount of space allocated to each account. Your total mail store is thus constrained by this limit.
1GB in Plusnet's case - this cropped up recently when someone went over and had his emails deleted while he was away and unaware of the warnings.
I think it was closer to 600MB wasn't it?
Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 9:30 AM
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[quote=http://www.plus.net/info2/legal/aup.html]8.1.3 If you exceed a total of 1GB (Gigabytes) of email on our servers for more than a 30 day period it will be removed without notice to you.
The way it is linked forms part of the contact, if you delete emails for someone over 600MB but under 1GB they would be entitled to recompense!
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 9:36 AM
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Quote from: Bob If I'm honest, we're struggling a little to work out what caused certain customer's POP3 mail to be downloaded again
We checked the UDILs in the cache file and the base numbers hadn't changed. As I mentioned last week, this particular aspect of the problem seems to have been limited to one particular storage filer. I just hope it doesn't happen again following this morning's issues.
I've seen examples where it has happened again
Quote from: jelv It better not be 600MB or Plusnet will be in breach of the Acceptable use policy!
This was discussed over here. I don't think we're running the scripts at all at the moment until we've had time to revisit the process.
Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 2:27 PM
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Quote from: Bob Paul, last week's problem has resurfaced
As per the Service Status thread, the problem's been resolved for the time being.
We think that this bug might be contributing to the problem. The new storage platform is running NFSv4, whereas the old one used NFSv3. A change control has been raised to patch all of our linux-based mail collection/delivery servers.
I'll post a planned maintenance announcement once the change control's been approved...
Bob Pullen
Plusnet Product Team
If I've been helpful then please give thanks ⤵
Re: Entire mailbox contents duplicated via POP3 07/01/2011
10-01-2011 7:09 PM
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Cheers
Paul
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